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Finding the Fourth Proportional to 5,680.08, 8,520.12 and 1,520.16

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Solution

The fourth proportional to 5,680.08, 8,520.12 and 1,520.16 is: 2,280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.08 : 8,520.12 = 1,520.16 : x
  2. Step 2: Convert to fraction form
    5,680.08/8,520.12 = 1,520.16/x
  3. Step 3: Cross multiply
    5,680.08x = 8,520.12 × 1,520.16
  4. Step 4: Simplify right side
    5,680.08x = 12,951,945.62
  5. Step 5: Solve for x
    x = 12,951,945.62/5,680.08
  6. Step 6: Final answer
    x = 2,280.24

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.